package com.kylin.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;

@Controller
public class LoginController {

    @RequestMapping("/user/login")
    public String login(@RequestParam("username") String username,
                        @RequestParam("password") String password,
                        Model model, HttpSession session){
        //具体业务：
        if (!StringUtils.isEmpty(username)&&"123456".equals(password)){
            session.setAttribute("loginUser",username);
            //登录成功！防止表单重复提交，我们使用重定向
            return "redirect:/main.html";
        }else {
            //告诉用户，登录失败!
            model.addAttribute("msg","用户名或者密码错误！");

            return "index";
        }
    }


    @RequestMapping("/user/logout")
    public String loginOut(HttpSession session){
        //session初始化
        session.invalidate();
        return "redirect:/index.html";
    }

}
